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Analysis of a cluster of surgical failures: Application to a series of neonatal arterial switch operations  Marc R. de Leval, MD, FRCS, Katrien François,

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Presentation on theme: "Analysis of a cluster of surgical failures: Application to a series of neonatal arterial switch operations  Marc R. de Leval, MD, FRCS, Katrien François,"— Presentation transcript:

1 Analysis of a cluster of surgical failures: Application to a series of neonatal arterial switch operations  Marc R. de Leval, MD, FRCS, Katrien François, MD (by invitation), Catherine Bull, MRCP (by invitation), William Brawn, FRCS (by invitation), David Spiegelhalter, PhD (by invitation)  The Journal of Thoracic and Cardiovascular Surgery  Volume 107, Issue 3, Pages (March 1994) DOI: /uri:pii:S Copyright © 1994 Mosby, Inc. Terms and Conditions

2 Fig. 1 Illustrations of coronary arterial transfer removing large button of aorta and tucking it into centrally hinged trap door with minimal mobilization. The Journal of Thoracic and Cardiovascular Surgery  , DOI: ( /uri:pii:S ) Copyright © 1994 Mosby, Inc. Terms and Conditions

3 Fig. 2 Cumulative failure. "Failure" as death or death/near miss. R, Peritoneal dialysis; N, near miss; D,death. The Journal of Thoracic and Cardiovascular Surgery  , DOI: ( /uri:pii:S ) Copyright © 1994 Mosby, Inc. Terms and Conditions

4 Fig. 3 Cumulative failure rate with CUSUM boundaries. Alert lines correspond to 80% confidence; alarm lines to 95% confidence (see text). A, Death: targets 2% and 5%. B, Death or near miss:targets 5% and 10%. The Journal of Thoracic and Cardiovascular Surgery  , DOI: ( /uri:pii:S ) Copyright © 1994 Mosby, Inc. Terms and Conditions

5 Fig. 3 Cumulative failure rate with CUSUM boundaries. Alert lines correspond to 80% confidence; alarm lines to 95% confidence (see text). A, Death: targets 2% and 5%. B, Death or near miss:targets 5% and 10%. The Journal of Thoracic and Cardiovascular Surgery  , DOI: ( /uri:pii:S ) Copyright © 1994 Mosby, Inc. Terms and Conditions

6 Fig. 4 Cumulative failure rate: comparison of actual and predicted (from CHSS equation) number of deaths. GOS, Great Ormond Street. The Journal of Thoracic and Cardiovascular Surgery  , DOI: ( /uri:pii:S ) Copyright © 1994 Mosby, Inc. Terms and Conditions

7 Fig. 5 Serial estimates of failure rate with 95% confidence limits. A, With no "memory loss." B, With down-weighting at 7% per case. The Journal of Thoracic and Cardiovascular Surgery  , DOI: ( /uri:pii:S ) Copyright © 1994 Mosby, Inc. Terms and Conditions

8 Fig. 5 Serial estimates of failure rate with 95% confidence limits. A, With no "memory loss." B, With down-weighting at 7% per case. The Journal of Thoracic and Cardiovascular Surgery  , DOI: ( /uri:pii:S ) Copyright © 1994 Mosby, Inc. Terms and Conditions

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